How to deal with the hotel without hot water?

First, confirm whether the accommodation provided by the hotel includes 24-hour hot water supply. If not, you can only use hot water at the time stipulated by the hotel. If yes, contact the front desk of the hotel to reflect the problem, ask the front desk to change the room or let someone from the engineering department repair it. If nothing can be solved, call the hotel check-out fee and go to another hotel.